i'm looking into the fine details of building up an N/A vg30de to put into my car while i'm away, i've read that some people are getting 140rwkw with an unopened engine+ all the bolt ons and a wicked tune. i'm keen to find out what mods would be needed to get this kind of power from an N/A and where would be the best place to find a fresh, low kms N/A suitable for the job. let the forums do there thing i guess lol cheers
I guess the real power would come from your heads if you ported then did a 3 way grind and added cams but I guess thats opening an engine. Alot of forsale adds have coem up on here with low km NA engines that people have pulled due to a TT conversion. Is what I have done is drop a NA motor into my TT while I mess about with the TT motor, is that what you planing to do ? or you just want a quick na ?
hmmn... sort of lol i'm just thinking about what i want to do when i finish recruit school. buy someone elses project that has had the money spent on it and drive the N/A sil around melbourne while i'm living down there. or spend the money on the s13, keep it N/A but build it so it will keep up with the rest of the crew.
+1. I've driven an NA s13 and they are really quite slow.. Of course you can throw money at it to make it faster, but an NA zed will be faster already. I'm not sure what's required to make a monstrous NA, but I reckon give it some ITBs and it will be suitably tough! -Kirill
With the s13, you'd probably want to start by chucking the autech sr20 in from the autech s15. Past that, not sure. With the zed, I'm thinking: Port the head as mentioned above, get some ITBs action, get someone who knows their shit to tune it, a suitable exhaust with headers, possibly even increase the capacity to 3.2, get some angrier cams, get rid of all accessories to the engine.. No telling how crazy one could go, but would be great to see someone undertake a properly crazy NA build! -Kirill
Everyone plugs this whole approach to NA performance tuning, so I'm going to add my input: With my NA, My focus was to have a solid mechanical engine, with handling and responsiveness as its main strengths. This was on a relatively stock engine. If I were in your situation, I would do the following Plenum pull, to facilitate installation of TTZ / Stillen header pipes Pod filter with a NO RESTRICTION intake. Larger radiator and Electric thermo fan and appropriate circuitry Fresh oil and spark plugs of correct spec Spitfire coils Lightweight flywheel Lighter driveshaft Light weight crank pulleys and accessory pulleys (No debate necessary) Exhaust, I found feels most responsive down low with the 2.25 inch standard exhaust, with a full high flowing 2.5 inch twin system being better up in the revs. Depends what you need your engine though. There is some quite cool things you can do with collector arrangements and exhaust venturis, but this is probably out of the question... For your NA build, focus your mods on letting the engine breathe thru free flowing intake and exhaust withh suitable back pressures. Reducing rotating weight thru UDP's, electric fan, Flywheel and driveshaft improves responsiveness. The other points are mainly just the accessories to freshen up an old(er) engine (spark, oil, cooling)
I don't think the cost vs benefit of ITB's is a wise choice. How wold you (easily) regulate idle speed? Although a modified intake plenum with water / meth injection and massive advance would do the trick
For an NA to make 140rwkw without internal modifications For an NA to make 140rwkw without internal modifications: Need to start with a manual gearbox because you will be loosing about 15rwkw with an automatic. Ensure that the NA engine is in good condition i.e. check the compression of each cylinder... For a quick check you could use Conzult to do a power balance test to verify that each cylinder dips the curve by the same amount, a cylinder that does not dip as far as the rest potentially has a compression problem. Ensure that a 100kkm service has been done i.e. new water pump, spark plugs, O2 sensors, timing belt, and fluids. A good quality pod filter to improve the intake breathing. A good quality 2.5 inch dual exhaust system and not the standard factory one... you could look at getting headers but you have to find appropriate quality ones, noting that the US specific ones need to be modified to work on our right-hand drive zed. Generally some headers out there are NOT a quality product and can crack and perform worse than OEM headers. A ecu tune such as Nistune to advance the timing from 15 to 18 (potentially more) and modify the fuel maps so as not to flood the engine with fuel when under load i.e. not killing the top of the power curve. But in all honesty (writing from experience) you should not be targeting total RWKW with an NA but rather throttle response and the shape of the curve. For an NA a 120rwkw zed could actual be a lot quicker & responsive car than a 140rwkw zed, (even a crapped-out TT which there is a fair amount out there). For improved throttle response also look at: A lighten under-drive pulley A one piece drive shaft Get new shocks front and rear so as to get that power into the ground better. Also look at getting a front strut-brace and potentially a rear strut-brace to improve the handling, which means you can keep higher speed in the corners. With an NA you are after a performance package and not pure power numbers. A well setup NA can out perform most of the 'standard' TTs (read non-loved) zeds through the twisties. But an NA will not beat a TT (even a shitbox 160rwkw) in a straight line drag over some distance, but you can beat them from one twistie corner to the next.
Vacuum manifold with a IACV attached to the side You'd need the vac manifold for the brake booster anyway. Oh yeah, I know of a nice set of ported rebuilt heads going cheap Perfect for a NA.
There is so much information already detailed on this subject.. how can you knowingly ask such an open question without doing any homework? Apart from the TTZ site, the 200 results on this forum and the many dedicated detailed NA threads on the US websites, how can you ask this forum to do your work for you? How about this... You get a specific list of what you plan to do and how much you want to spend... and then ask advice on your specific course of action? "let this forum do their thing" is an insult.
considering 3 people already gave great information about what would be required to make a nice responsive N/A. i've searched on this forum but theres to much crap coming on, i dont have all day to go through every thread to see if its got the info i want. its much easier to start a thread where the people who have done this kind of build can come in, give a brief amount of information so i can look into it more and go about it which ever way i choose. mate, this is what a forum is for, if it were a database so people could search it would prob be called a library instead. anyway, thanks for the imput guys... the more the merrier
lol Not this "NA in the twisties" nonsense again! You'd gain a bit of performance getting a tune done aswell once you have completed some of the above mentioned modifications. The majority of Nissan performance cars come quite detuned from the factory. Personally I'd just stick with exhaust, intake, headers, suspension mods etc and as others have said dont worry too much about the overall kw figure just make it a fun car to drive.
170 rwkw for this one, built engine though. http://www.aus300zx.com/forum/showthread.php?t=269828&highlight=powerful
cheers wizard... how's that car doing now? i'd say with a rebuild, the headwork and some nice cams that thing would be pretty damn quick... love it
NA performance, things to do......... exhaust side headers, tuned length if possible, hpc coated or heat wrapping optional high flow ceramic catalytic convertors, or a metal core high flow type full exhaust in 2.25 or 2.5" diameter, preferably all mandrel bent(not press bent), including either a x-pipe or centre muffler and high flowing rear mufflers, preferably not cannons to minimise noise intake side upgrade panel filter or aftermarket pod, could go twin intake but will not provide any benefit on NA car larger throttle bodys port matched upper and lower plenums internal engine parts full engine balance lightweight rods high compression pistons larger cams and heavier duty valve springs to suit adjustable cam gears oversize intake and exhaust valves port and polish the heads and cc the combustion chambers engine auxilarys, add ons new spark plugs upgrade injectors or fresh tt injectors, not necessary but gives headroom lightweight accesory pulleys and underdrive pulley splitfire coilpacks engine grounding kit engine oil cooler power steering fluid cooler auto transmission fluid cooler lightweight flywheel new/upgraded clutch braided clutch line,new clutch fluid one piece tail shaft waterhose bypass,clean iacv/aac full 100k service with timing belt, tensioner etc tuning, on a dyno, properly! thats all i can think of for now, these are all "engine/performance related" so doesnt include any handling mods etc etc you could go much further with things like custom made intake manifolds, individual throttle bodys, nos, water injection and heaps more, what ive listed is just the "normal" stuff....there will be opinions on what is or isnt a good idea(like the underdrive pulley) but i have put up as much of a list as i can and you can pick and choose which you wnat to use from there for yourself....
